/*
 * Copyright (c) 2009 Roman Savelyev
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#ifndef __IMPORTSWALKER_H__
#define __IMPORTSWALKER_H__

#include <e32cmn.h>

#ifndef __TESTABLE__
#define __TESTABLE__
#endif /*__TESTABLE__*/

class E32ImportSection;
class E32ImportBlock;

class TImportsWalker
    {
public:
    TImportsWalker();
    TInt Set(const E32ImportSection& aImportSection, TInt aNumberOfBlocks);
    TInt Next();
    inline TInt NumberOfImports() const;
    inline const TDesC8& LibraryName() const;
    inline const TUidType& UidType() const;
    inline TInt BranchOffset() const;
private:
    TInt LibraryNameLength(const E32ImportBlock& aImportBlock) const;
    TInt ExtractSID(const TDesC8& aDllName, TPtrC8& aName, TPtrC8& aTail, TUint32& aSID);
    void Reset();
private:
    TInt iNumberOfImports;
    const TUint8* iImportSection;
    TPtrC8 iImportBlocks;
    TBuf8<KMaxName> iLibraryName;
    TUidType iUids;
    TInt iBranchOffset;
    TInt iCurrentImport;
    __TESTABLE__
    };

inline const TDesC8& TImportsWalker::LibraryName() const {return iLibraryName;}
inline const TUidType& TImportsWalker::UidType() const {return iUids;}
inline TInt TImportsWalker::BranchOffset() const {return iBranchOffset;}
inline TInt TImportsWalker::NumberOfImports() const {return iNumberOfImports;}

#endif /*__IMPORTSWALKER_H__*/
